在棱长为2的正方体
中,E,F分别为棱AA1,BB1的中点,G为棱A1B1上的一点,且
,则异面直线D1E与BC所成角的正切值为____________ ;点G到平面D1EF的距离为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c3defdd4d0c665d55184b84a7eb316f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/732adc324a9be96db1fb630f9e9ee99c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/85abb662-a2aa-44ff-918a-ba29361ea43e.png?resizew=146)
更新时间:2023-02-25 13:20:57
|
相似题推荐
填空题-单空题
|
适中
(0.65)
名校
解题方法
【推荐1】如图,在四棱锥
中,底面
是边长为1的正方形,侧棱
的长为2,且
与
的夹角都等于
.若
是
的中点,则直线
与
所成角的余弦值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9df7fc746f8c4801d8f2f0471ba3297e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/9/75649310-3030-4d48-886d-47d2b0c9a99c.png?resizew=198)
您最近一年使用:0次
填空题-双空题
|
适中
(0.65)
解题方法
【推荐2】如图,在三棱锥
中,
,且
,M、N分别是AB和SC的中点,则异面直线SM与BN所成的角的余弦值为________ ,二面角
大小为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/700f2f0f1cf306f7fc18d18fe91d0acb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f25845c3d902ce7b518d6e686431340.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5d947024d2ee50cc3c6445beb11420.png)
![](https://img.xkw.com/dksih/QBM/2020/3/5/2412836375371776/2412852779114496/STEM/d4680a09-1c85-48c0-80ce-3687d115c255.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
解题方法
【推荐1】如图,直三棱柱
中,
,
,
、
分别是棱
、
的中点.点
到平面
的距离是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cad7b03f934718b18ce34cdf0b85863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5875cc0a340a06247ae56aff8f6d377.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/22/3261f078-7ae3-413b-9e5f-c46e52131ff1.png?resizew=183)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
解题方法
【推荐2】如图所示,正方体
的棱长为1,
为线段
,
上的动点,过点
的平面截该正方体的截面记为S,则下列命题正确的是______
![](https://img.xkw.com/dksih/QBM/2019/6/18/2228349021732864/2228404464812032/STEM/754b03fb-02c8-465d-bf29-112c9f6e2f27.png)
①当
且
时,S为等腰梯形;
②当
分别为
,
的中点时,几何体
的体积为
;
③当M为
中点且
时,S与
的交点为R,满足
;
④当M为
中点且
时,S为五边形;
⑤当
且
时,S的面积
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3770aa1bf6a441811db0aec1d27a7ea1.png)
![](https://img.xkw.com/dksih/QBM/2019/6/18/2228349021732864/2228404464812032/STEM/754b03fb-02c8-465d-bf29-112c9f6e2f27.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3324433cbbf6a7704b585b6a7692403.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a642da6eca959067cb42d35e848174c7.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5ac8a6f41e4b143675f07c07b599246.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d7abf02717d6e59d8a64a65a87c412.png)
③当M为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/102f4da3f6d889878c591d6daabc5714.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5cdaa601ee346f02218ba3ffd9da4b5.png)
④当M为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36cc59357cbd67409b1d1136bfc3f768.png)
⑤当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f2cf3cea17ced18ebfafb8aa3f107d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70d9fc9f2498c4759a33af476443f2a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
您最近一年使用:0次